Verifying the communication with the speed log
Without the input from a speed log, the TV80 will not be able to present correct navigational information. The vessel’s current speed is shown on the top bar. The communication with the sensor is tested.
Prerequisites
The TV80 system is installed as specified by the relevant installation instructions.
•  The sensor is connected to a communication port on the computer. The sensor is turned on and in normal operation.
•  The interface port is set up with the correct communication parameters.
•  The TV80 system is turned on and operates normally.
Neither tools nor instruments are required. For connections and communication parameters, see the relevant end-user documentation from the sensor manufacturer.
Context
In most cases a suitable sensor is already installed on the vessel. A global positioning system (GPS) with a compatible output format can also be used.
The properties of each of the available communication ports are defined on the I/O Setup page. The Navigation dialog box controls how the TV80 receives information from external navigation sensors.
The communication parameters defined for NMEA 0183 are:
•  Baud rate: 4800 bit/s
•  Data bits: 8
•  ParityEven
•  Stop bits: 1
Some instruments may provide other parameters and/or options. You must always check the relevant technical documentation supplied by the manufacturer.
Procedure
1 Observe the top bar.
2 Make sure that the information from the sensor is displayed.
3 If possible: Use another instrument to verify that the information provided by the TV80 system is correct.
4 Open the Setup menu.
5 On the Setup menu, select Installation.
Observe that the Installation dialog box opens.
6 Observe the I/O Setup page on the right side of the Installation dialog box.
Every interface is presented as a small "block diagram".
a In the relevant block diagram, select the serial port icon.
b Observe that the Serial Port Setup dialog box opens.
c Make sure that the communication parameters are correct.
Adjust the settings if it is necessary.
d Close the dialog boxes.
7 Select Navigation to open the dialog box.
a Open the relevant page.
b Make sure that the communication parameters are correct.
Adjust the settings if it is necessary.
c Close the dialog box.